Starting device for explosion-engines.



v "PATEN TED MAY 2.1,19'07. I. O. HANSBN-ELLBHAMMBR. STARTINGDEVIOB FOREXPLOSION ENGINES.

APPLICATION FILED MAR. 21, 1904,

UNITED STATES PATENT OFFICEf JACOB- CHRISTIAN HANSEN-ELLEHAMMEB, 0FCOPENHAGEN, DENMARK. STARTING DEVICE FOR EXPLOSION-ENGINES;

Specification of Letters Patent. I

p tented May 21,19o7.

hpplicatlcnflled March 21,1904. Sorlal No. 199,316.

' To alll 'whom it maynmw'ern:

Be it knownthat '1 J AooB CHRISTIAN HAN? SEN-ELLEHAMMER, of No. 99Istedgade,'.Co-' penhagen, in the Kingdom of Denmark, me-

chanicalengineer, have invented certain new and useful ImprovementsStarting" Devices for E2: losion-Engines'karid I do hereby declaretheollowin to be-a full, clear, and

exact description othe invention, such as marked there0n,;- wliich'form'a part of this specification.

.* This invention relateszto starting devices for explosion enginesand'has for its object a simple construction, whereby" ,the useof'comression or cut-off cocks, 'or means for holdin'g'thestartingvalveto its seat after theengin'e is started, are dispensedwith;-

The device consists of-an automatically operating valve opening towardthe workin cylinder and haying a valve bodys'ubjecte to pressure b"suitable' means, such as a spring or the 'ke,- tocaus'e the valve to remain open not only when the engine is at .Irestand during the suctionstroke, but also during the -first portion of the compression 'fstrolge'wheIi the engine is t'ojbe' started arid when t ecompression-but slowlyincreases.

Onitheother'hanm i the load on the valve is not greater than that whichallows the valve 1 tocloseduringthestarting periodatthe lat,- 35.

ter partlof the compressionstroke when the cowessionisincreasing-rapidly; v en the engine is working normally the valve willbe closed during the entire period of compression and consequentlyduring the period of explosion.' ltis-als'o closed during the exhauststrokeand will'onlyopen during the suction stroke-- A characteristicpresentvalve and diniices heretofQi'eused is that the load on the valvebody ith atl is the tensionaof; the spring, is adjusted independ fentlyof, the-explosion pressure :and is only. dependent uponv the comression'jipressure, said load being adj'iisted-to' momma-digging erencebetween the of the valve shortly before normal compression is attained.i

starting device in the end of a cylinder, partly on one end the valveband on the other threaded end the nuts 9. The inner. end of the plughas anenla'rged chamber h commuclined to the axis of t e plug. A spiralsprung e is secured at one end to the upper 13 g the tension ofthespring is adjusted.

tate as wellias accelerate the starting, be-' cause the compression instarting is easily overcome by hand without'loss of explosive.

advantage in connection with the'va'lve; is, that durin c the suctionstroke a currentof' cold-air'w 1 be admitted into the end of the powercylinder, causing it to be cooledand v drawn into the cylinder.

Having thus described my invention, what I Letters Patent, is

explosion en 'ne', "of a hollow screw-plug mounted int chamber normally,connnunicating wit the :cylinder atjone. end and provided with ports Im the other end inclined to .the axis' of the plug connecting thechamber with the atmo's j pher'e,:a threaded valve stem passing through"the guidedinan xt neionformed on the time ove said charace'1-';-a\QjiqilVifl on the end in section and partly in elevation, the air, 011p nicating with the atmos here-by ports '1', in-

The principal eifect of the valve is tovfacili-g also promoting themixmg' of the air andjuefl The accompanying drawing illustrates the einto its end. The inner end of the plug is formed'with a conical seat aor the end is reamed conical." Passing through the entire length'of theplug a is a valve stem (1' carrying a 5 a .7 eaded portion is of theplug; the other end of said springrests or is attached to the up-'pe'rpart of the nuts 9. By turning the nuts \po'wer atthe instant ofexplosion; {Another' so I claim as new therein and desire to secure by.

The combination with the "cylinder of ani e cylinder having an enlargedof the'stem adapted to be seated on the lower in testimony that I claimthe foregoing as I end of the'plug to close communication bemyinvention, I have signed mynamein pres- IO tween the chamber andcylinder, a spring havence of the subscribing Witnesses.

ing one end connected to the plug, and nuts J AOOB CHRISTIANHANSEN-ELLEHAMMER. adjustable on the stem connected to the Witnesses:other end of the spring whereby the tension P. HOFMAN BANG,

of the latter may be adjusted to normally A; G. MIoHELsoN,

hold the valve off its seat. l E.- BbUTARD.

